Examining the Pathological Diagnostic Impact of Frozen Sections in Breast Cancer

Objective:To analyze the diagnostic value of frozen section pathology in the diagnosis of breast cancer.Methods:A total of 50 patients with breast tumors treated between July 2021 and February 2023 were randomly selected as samples.Both paraffin section and frozen section diagnoses were conducted.The paraffin section results served as the gold standard for evaluating the value of frozen section examination.Results:Among the frozen section diagnoses,48 cases(96.00%)were confirmed,1 case was misdiagnosed(2.00%),and 1 case was delayed(2.00%).Among the confirmed patients,45 cases(90.00%)were entirely consistent,and 3 cases(6.00%)were basically consistent.The diagnostic rate of the frozen section was 96.00%,compared with 100.00%for the paraffin section(P>0.05).The diagnostic time of the frozen section(35.25±2.11 min)was significantly shorter than that for the paraffin section(6911.36±58.36 min;P<0.05).Conclusion:Frozen section diagnosis is rapid and demonstrates relatively high diagnostic accuracy.It can guide doctors in determining whether to pursue breast-conserving treatment and aid in selecting appropriate surgical methods.This is beneficial for preventing unnecessary medical interventions and reducing the need for secondary surgeries in breast cancer patients.

Histological examination of frozen sections for patients with acute cholecystitis during cholecystectomy

BACKGROUND： Unexpected gallbladder cancer may present with acute cholecystitis-like manifestat/ons. Some authors rec- ommended that frozen section analysis should be performed during laparoscopic cholecystectomy for all cases of acute cholecystitis. Others advocate selective use of frozen section analysis based on gross examination of the specimen by the surgeon. The aim of the present study was to evaluate whether surgeons could effectively identify suspected gallbladder with macroscopic examination alone. If not, is routine frozen sec- tion analysis worth advocating？

Role of frozen section assessment for intraductal papillary and mucinous tumor of the pancreas

Intraductal papillary mucinous neoplasms(IPMN) of the pancreas include a spectrum of dysplasia ranging from minimal mucinous hyperplasia to invasive carcinoma and are extensive tumors that often spread along the ductal tree.Several studies have demonstrated that preoperative imaging is not accurate enough to adapt the extent of pancreatectomy and have suggested routinely using frozen sectioning(FS) to evaluate the completeness of resection and also to check if ductal dilatation is active or passive,in order to avoid an excessive pancreatic resection.Separate main duct and branch duct analysis is needed due to the difference in the natural history of the disease.FS accuracy averages 95%.Eroded epithelium on the main duct,severe ductal inflammation mimicking dysplasia and reactive epithelial changes secondary to obstruction can lead to inappropriate FS results.FS results change the planned extent of resection in up to 30% of cases.The optimal cut-off leading to extend pancreatectomy is not consensual and our standard option is to extend pancreatec-tomy if FS reveals:(1) at least IPMN adenoma on the main duct;or(2) at least borderline IPMN on branch ducts;or(3) invasive carcinoma.However,the decision to extend resection must be taken after a multidisciplinary discussion since it does not exclusively depend on the FS result but also on age,general condition and expected prognosis after resection.The main limitation of using FS is the existence of discontinuous("skip") lesions which account for approximately 10% of IPMN in surgical series and can lead to reoperation in up to 8% of cases.

Retrospective Analysis of Diagnosis by Intraoperative Frozen Section and Routine Paraffin Embedded Tissue in 638 Thyroid Disease Patients

OBJECTIVE To summarize a common pathogenefic condition, the pathologic characteristics shown in frozen section and our experience utilizing 2 different common thyroid diseases （TD）. diagnostic methods in cases of METHODS Data from 638 cases with frozen sections from thyroid tissue were retrospectively analyzed. The intraoperative frozen sections of the patients and postoperative diagnostic results of routine paraffin sections were compared. RESULTS In the 683 patients, the gender ratio of females to males was 2.64 ： 1, and the ratio between the patients with nodular goiter （NG） and the patients with thyroid adenoma was 1.5 ： 1. The oldest age group of patients with thyroid cancer （TC） ranged from 40 to 49 years. Frozen section pathologic examination has been employed more and more in the diagnosis of thyroid diseases, and the detection rate of TC has increased year by year, i.e., the rate increased to 6.45%, 7.58%, 14.55% and 16.57%, respectively, in 2005, 2006, 2007 and 2008. Thyroid papillary carcinoma （TPC） was the most commonly seen malignant tumor of the thyroid （MTT）, which accounted for approximately 94.8% of MTTs and 11.44% of the total TDs. Micropapillary carcinoma accounted for 27.4% of TPC, and multifocal carcinomas accounted for 15.58% of TCs. Many of the TCs （19.48%） were complicated by benign diseases such as adenoma, NG and thyroiditis. The coincidence rate of diagnoses made by frozen section and paraffin embedding for thyroid disease was 98.59%. Calcification was rather common in NG and TPC, and there were significant differences in psammoma bodies （PMB） between the calcifications of TPC and NG （P 〈 0.01）. CONCLUSION TPC ranks first in the incidence of MTTs and accounts for 94.8% of all MTTs. About 1/4 of TPCs are micropapillary carcinoma, while 1/5 are accompanied by benign disease, such as adenorna, NG and thyroiditis. PMB are of importance and of significance in the diagnosis of TPC.

Intraoperative frozen section diagnosis of bile duct margin for extrahepatic cholangiocarcinoma

AIM To evaluate the usefulness of frozen section diagnosis(FSD) of bile duct margins during surgery for extrahepatic cholangiocarcinoma(CCA). METHODS We retrospectively analyzed 74 consecutive patients who underwent surgery for extrahepatic CCA from 2012 to 2017, during which FSD of bile duct margins was performed. They consisted of 40 distant and 34 perihilar CCAs(45 and 55 bile duct margins, respectively). The diagnosis was classified into three categories: negative, borderline(biliary intraepithelial neoplasia-1 and 2, and indefinite for neoplasia), or positive. FSD in the epithelial layer, subepithelial layer, and total layer was compared with corresponding permanent section diagnosis(PSD) postoperatively.Then, association between FSD and local recurrence was analyzed with special reference to borderline.RESULTS Analysis of 100 duct margins revealed that concordance rate between FSD and PSD was 68.0% in the total layer, 69.0% in the epithelial layer, and 98.0% in the subepithelial layer. The extent of remaining biliary epithelium was comparable between FSD and PSD, and more than half of the margins lost > 50% of the entire epithelium, suggesting low quality of the samples. In FSD, the rate of negative margins decreased and that of borderline and positive margins increased according to the extent of the remaining epithelium. Diagnostic discordance between FSD and PSD was observed in 31 epithelial layers and two subepithelial layers. Alteration from borderline to negative was the most frequent(20 of the 31 epithelial layers). Patients with positive margin in the total and epithelial layers by FSD demonstrated a significantly worse local recurrence-free survival(RFS) compared with patients with borderline and negative margins, which revealed comparable local RFS. Patients with borderline and negative margins in the epithelial layer by PSD also revealed comparable local RFS. These results suggested that epithelial borderline might be regarded substantially as negative. When classifying the status of the epithelial layer either as negative or positive, concordance rates between FSD and PSD in the total, epithelial, and subepithelial layers were 95.0%, 93.0%, and 98.0%, respectively.CONCLUSION During intraoperative assessment of bile duct margin, borderline in the epithelial layer can be substantially regarded as negative, under which condition FSD is comparable to PSD.

Comparative Study between Intraoperative Frozen Section and Scrape Smear Cytology in the Diagnosis of Ovarian Neoplasm

Objective: The aim of this work is to compare between intraoperative frozen section and scrape smear cytology in the diagnosis of ovarian neoplasm. Method: This study was performed between March 2011 and March 2012, on 50 patients presented with ovarian mass. Gross examination of the tumor removed was done by inspection and palpation. The specimen was then cut with a sharp knife into two halves. The area was scraped with a sharp scalpel or the end of a glass slide, depending upon the type of tissue. A semifluid drop thus obtained was spread over a glass slide. One to four slides per case were taken from different representative areas. The slides were labelled and immediately put into 95% ethyl alcohol and stained with hematoxylin-eosin. The specimens were then fixed in formalin. Paraffin blocks of the sections were processed in the routine way and sections were stained with hematoxylin and eosin (H and E). Assessment of the overall accuracy of the intraoperative diagnosis was classified as concordant or discordant. Results: The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of scraping technique in the diagnosis of benign ovarian masses were 100%, 95.2%, 96.7%, 100% and 98% respectively. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of scraping technique in the diagnosis of border line ovarian masses were 100%, 93.4%, 25%, 100% and 94% respectively. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of scraping technique in the diagnosis of malignant ovarian masses were 80%, 100%, 100%, 88.2% and 92% respectively. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of frozen section in the diagnosis of benign ovarian masses were 100%, 100%, 100%, 100% and 100% respectively. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of frozen section in the diagnosis of borderline ovarian masses were 100%, 95.9%, 33.3%, 100% and 96% respectively. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of frozen section in the diagnosis of malignant ovarian masses were 90%, 100%, 100%, 93.8% and 96% respectively. Conclusion: Frozen section is more accurate than smear preparations in the intraoperative assessment of ovarian tumors in this study. However, the cytology preparations were helpful in supporting the histological diagnoses, and in some cases, provided additional useful information. Thus, cytology has a complementary role to frozen section in the intraoperative assessment of ovarian lesions. At the centers where the facilities of frozen section are not available, intraoperative scrape cytology is a useful tool for intraoperative diagnosis of tumor.

Accuracy of Intraoperative Frozen Section in the Diagnosis of Ovarian Neoplasms

Objective: The aim of the work is to evaluate the accuracy of intraoperative frozen section in the diagnosis of ovarian neoplasms in Zagazig University. Design: A prospective cross sectional cohort study. Method: This study was performed between March 2011 and March 2012, on 50 patients presented with ovarian mass. Gross examination of the tumor removed was done by inspection and palpation. The specimen was then cut with a sharp knife into two halves. The most appropriate area thought to be representative of lesion was chosen. The number of sections frozen was depended on the type and size of the tumor. Seven to eight μm sections were obtained and stained with hematoxylin-eosin. The specimens were then fixed in formalin. Paraffin blocks of the sections were processed in the routine way and sections were stained with hematoxylin and eosin (H and E). The diagnosis obtained by intraoperative frozen section based on cellularity and cell morphology was compared with final histopathological diagnosis in terms of diagnostic sensitivity, to differentiate between benign and malignant lesions. Assessment of the overall accuracy of the intraoperative diagnosis was classified as concordant or discordant. Results: There was no statisticaly significant differencre in the studied patients as regard the clinical data, macroscopic and intraoperative picture, while there was statisticaly significat association as regard the laterality of the ovarian masses. The validity of frozen section in the diagnosis of benign tumour was 100% with 100% accuracy, specificity, positive predictive value, negative predictive value, while sensitivity & negative prediction for borderline tumour and specificity & positive prediction of malignant tumour were 100%, specifecity for borderline tumours was 95% while the positive predictive value was 33.3% with 96% accuracy for both malignant and borderline tumours. Conclusion: Intraoperative frozen section is accurate for rapid diagnosis of ovarian tumors. It can help surgeons avoid under-treatment or overtreatment of patients. Our study was designed prospectively using a small number of patients. The door is open to larger studies using a larger number of patients to be performed in order to substantiate our results.

Quality assessment of intraoperative frozen sections: An analysis of 261 consecutive cases in a resource limited area: Morocco

Purpose: To evaluate the accuracy and limits of a frozen section analysis in our department in order to develop a quality control. Materials and methods: all frozen sections reported at our department between 1st January 2010 and 31st December 2010, have been retrospectively evaluated. The frozen section results were compared to permanent paraffin section results. Results: Frozen sections and final diagnosis agreed in 95% and disagreed in 5% (13 cases), 6.6% of the cases were deferred (17 cases). The most common pathological processes encountered were presence/typing of neoplasm (85.4%) and assessment of surgical margins (7.3%). Conclusion: The accuracy of frozen sections diagnosis at our department can be interpreted as comparable with the most international quality control series and is valuable to assist surgeons in their decision.

Frozen Section Analysis of Breast Lumpectomy Margins

Objectives: To evaluate breast lumpectomy margins by frozen section in breast conservation surgery. Methods: A retrospective study of frozen section of lumpectomy margins of one hundred ten patients was done at King Abdulaziz University Hospital from June 2007 to June 2013. All patients underwent lumpectomy + Sentinel lymph node biopsy. Patient records were studied for location of mass in breast, size of mass, site of breast, pre or postmenopausal, frozen section margins, new frozen section margins, permanent margins, reoperation. Complications like skin necrosis, numbness, and wound infection were studied. Result: Majority were Saudis (64.5%). Left breast was involved in 60%. Upper outer quadrant was involved in majority (51.9%). Size of mass was less than 1 cm in 14.8% cases, 1 - 2.9 cm in 43.5%, 3 - 4 cm in 13%, more than 4 cm in 10.2%. Lumpectomy plus sentinel lymph node biopsy was done in 96.4% and lumpectomy and axillary lymph node dissection was done in 1.8% cases. Gross margins were positive in 17.3% and frozen margins were positive in 28.2%. New margin on frozen section were positive in 3.6% and negative in 79.1%. Permanent section histology showed positive margins in 5.5% and negative in 94.5% cases. Re-operation was done in 7.3%. Lympho-vascular margins were positive in 20.9%. Skin necrosis was found in 2.2%, numbness was found in 4.4%, wound infection was in 2.2%. Conclusion: Lumpectomy margins with frozen section reduce re-operation and recurrence.

Frozen Section in Postmenopausal Women Presented with Suspicious Ovarian Masses, Does It Have a Role?

Background: Frozen section (FS) has a valuable role in the diagnosis of ovarian tumors. It is considered a pivotal point in guiding the surgical therapy, particularly in premenopausal women. In postmenopausal women, it may be required as well to avoid unnecessary surgical staging in benign ovarian tumors. Aim: This study aims to evaluate the accuracy of intraoperative frozen section in ovarian neoplasms in postmenopausal women. Materials and Methods: A retrospective analysis was done for intraoperative FS for suspected ovarian neoplasms. The study was conducted in Oncology Center, Mansoura University from March 2008 to December 2014. The frozen and paraffin section reports were compared, and overall accuracy, sensitivity, specificity, positive and negative predictive values were determined. Results: The study included 105 patients and the overall accuracy of FS in determining malignancy was 81.7%. The sensitivity for malignant tumors was 75.32% with specificity of 100%. For benign tumors, the sensitivity and specificity were 100% and 93%, respectively. Borderline tumors had the lowest sensitivity of 100% with specificity of 95.19%. Conclusion: The present study concurs that frozen section is an accurate test for diagnosis of benign and malignant tumors in postmenopausal women thus determining the extent of surgery done for them. On the other hand, accuracy rates for borderline tumors are low.

The Effectiveness of Intraoperative Frozen Section Analysis of Safety Margins in Breast Conserving Surgery and the Role of Surgeon in Decreasing the Rate of Positive Margins

Introduction: Nowadays the more accepted surgical option for treating early breast cancer is breast conserving surgery. The main challenge in this type of surgery is to get free safety margins without need of second surgical operation, so many breast surgeons have started to depend on intraoperative frozen sections to ensure free safety margins. Aim of work: To assess our policy that we prefer to depend on intraoperative frozen section analysis to get free safety margin in breast conserving surgery from the 1st surgery, and its oncologic outcome. Patients and Methods: This is a retrospective study conducted in Oncology Center—Mansoura University (OCMU), where the data of 219 patients with breast cancer, who were managed by breast conserving surgery with intraoperative frozen section analysis of the safety margins, was analyzed. Results: The intraoperative frozen section analysis of safety margin was negative from the start in 183 (83.6%) patients, while it was positive in 36 patients (16.4%). Intraoperative decision of margin re-excision was applied for 29 patients (13.2%) in order to reach negative margin, modified radical mastectomy was offered for 4 patients (1.8%), while nipple sparing mastectomy with immediate breast reconstruction using latissimus dorsi flap was offered for 3 patients (1.4%). The postoperative paraffin results were typical with intraoperative frozen section analysis results in 216 patients (98.6%) and different results were obtained in only 3 patients (1.4%) who were managed by modified radical mastectomy in a second operation. Only 4 patients had local recurrence (1.8%) during the period of follow-up duration which was ranged from 1 to 86 months with mean ± SD (22.3 ± 14.1). Conclusion: The intraoperative frozen section analysis of safety margins in breast conserving surgery has very high-rate typical results with the paraffin section analysis and it is very helpful in decreasing the rate of second surgical operation in cases of infiltrated margins. It should be used routinely in all cases of breast conserving surgery.

Is the Use of Frozen Section Indispensable in the Surgical Treatment of Endometrial Hyperplasia?

Objective: To evaluate the reliability and accuracy of frozen section (FS) compared with final pathology and to determine whether they should be obligatory in every patient with atypical endometrial hyperplasia (AEH). Methods: We retrospectively assessed the medical records of 192 patients whose endometrial biopsy results were endometrial hyperplasia and underwent hysterectomy at our center. Results: Twenty-two (11.4%) of the 192 patients in our study had concurrent endometrial carcinoma (EC). Of these, 21 (95.5%) were EC and 1 (4.5%) was non-endome- trioid. Of the 140 patients with AEH, 20 (14.3%) had concurrent EC. Overall, 157 patients had FS. Two (1%) patients’ EC was higher than grade 1B and needed lymphadenectomy. The positive and negative predictive value, specifity and sensitivity of FS were found to be 77.8%, 95.7%, 97% and 70%, respectively. Conclusion: Patients who have AEH without high-risk comorbidities do not have to be referred to oncology centers and can undergo hysterectomy in community hospitals without FS.

术中冰冻病理诊断对眼睑肿物切除的价值探讨及病理类型分析

目的 探讨送检术中冰冻病理诊断(frozen sections, FS)的眼睑肿物病理类型及其对眼睑肿物和切缘的诊断准确率,分析FS与石蜡病理诊断不一致的常见原因。方法 选取2016年12月至2021年12月首都医科大学附属北京同仁医院送检FS眼睑肿物标本561份,分析眼睑肿物的病理类型,并以石蜡病理诊断为金标准,分析FS对眼睑肿物和切缘的诊断准确率。结果 561份标本中,左眼280份,右眼281份;上睑225份,下睑311份,内眦18份,外眦7份;肿物最大直径1~35 mm,平均(15.1±9.4)mm。其中良性病变165份(29.4%),位居前三位的分别为炎性病变、色素痣和脂溢性角化病;恶性病变396份(70.6%),位居前三位的分别为基底细胞癌、皮脂腺癌和鳞状细胞癌。FS对肿瘤和切缘的诊断准确率分别为97.1%、99.3%,肿瘤延迟诊断率为6.2%。肿瘤诊断不一致类型为误分类(60.0%,9/15)、假阴性(26.7%,4/15)及假阳性(13.3%,2/15)。诊断不一致的原因为解读失误(73.3%,11/15)、制片失误(26.7%,4/15)。结论 送检FS的眼睑肿物以恶性病变为主,并以基底细胞癌和皮脂腺癌多见;FS对眼睑肿物及切缘均具有较高的诊断准确率,能很好地指导手术开展,皮脂腺癌和恶性肿瘤的特殊亚型是与石蜡病理诊断不一致的主要因素,切片深度不够是导致漏诊和诊断不充分的主要原因,日常工作中对于可疑复发及较小的肿瘤应给予充分评估。

甲状腺癌冰冻切片病理不能明确诊断的临床因素分析

目的探讨术中冰冻切片(frozen section,FS)病理检查不能明确诊断甲状腺癌的发生情况,探寻影响FS病理检查准确率的临床因素。方法回顾性分析2016年8月至2019年12月在北京市大兴区人民医院行手术治疗的甲状腺癌患者。根据FS与石蜡切片病理检查结果,将目标结节分为FS明确诊断组与不能明确诊断组(包括延迟诊断组、误诊断组、意外诊断组)。比较FS明确诊断组与不能明确诊断组之间患者的一般情况、实验室检查、彩超、病理类型。结果共纳入癌结节336个,其中明确诊断组、延迟诊断组、误诊断组、意外诊断组癌结节数量及占比分别为266个(79.17%)、28个(8.33%)、21个(6.25%)、21个(6.25%)。延迟诊断组中,“不除外”甲状腺癌使用频率最高。与明确诊断组相比,延迟诊断组、误诊断组、意外诊断组癌结节最大径均更小(P<0.05);延迟诊断组纵横比>1的比例更多(P=0.017)、微钙化比例更低(P=0.002);误诊断组甲状腺过氧化物酶抗体水平更高(P=0.002)。结论临床医生应熟悉延迟诊断、误诊断常用的诊断用语。在治疗决策时应充分考虑难以明确诊断的可能,尤其是较小结节、合并慢性淋巴细胞性甲状腺炎患者。

甲状腺微小乳头状癌术中冰冻切片病理诊断准确性分析

目的探究甲状腺微小乳头状癌(papillary thyroid microcarcinoma,PTMC)采用术中冰冻切片病理诊断的价值。方法目的选取广东省农垦中心医院于2023年1—10月收治疑似甲状腺乳头状癌患者332例,对所有疑似患者分别实行两种诊断法,即术中冰冻切片病理检查、术后常规石蜡切片病理检查。术后常规石蜡切片检查结果作临床诊断金标准,统计并分析术中冰冻切片病理诊断结果与金标准的一致性。结果术后常规石蜡切片发现84例患者为PTMC,非PTMC患者248例,术中冰冻切片病理发现PTMC 71例,非PTMC 261例,术中冰冻切片的准确率为95.48%(317/332)、灵敏度是83.33%(70/84)、特异度是99.60%(247/248),Kappa值为0.784。结论术中冰冻切片病理诊断对PTMC的准确性与术后常规石蜡切片病理诊断结果具有较高的一致性,表明其对PTMC的诊断效果良好。

细针抽吸活检与术中快速冰冻切片在甲状腺结节诊断中的应用分析

目的:探讨细针抽吸活检(FNAB)细胞学和术中快速冰冻切片组织学检查在甲状腺结节中的诊断应用价值。方法:回顾性分析2021年4月至2023年4月苏州市相城人民医院收治的180例甲状腺结节患者临床病理资料,对比分析FNAB细胞学与术中快速冰冻切片组织学诊断的准确度、敏感度、特异度。结果:FNAB细胞学诊断良性病变52例,恶性病变128例,检查准确度、敏感度、特异度分别为92.2%、91.1%、95.6%;术中快速冰冻切片组织学诊断良性病变55例,恶性病变125例,检查准确度、敏感度、特异度分别为91.1%、88.9%、97.8%。2种诊断方法结果比较,差异无统计学意义(P>0.05)。结论:FNAB细胞学具有操作简便、准确率高和标本获取率高等特点,术中快速冰冻切片具有高时效性、边缘定位清晰等特点,二者相互印证,互为补充,对甲状腺结节性质的诊断具有重要的临床应用价值。

骨骼肌组织冰冻切片制备方法优化研究

目的 探索新鲜和固定骨骼肌组织的最优冰冻切片方法,为骨骼肌疾病的快速诊断及骨骼肌疾病发病机制的研究奠定实验基础。方法 提取C57BL/6J小鼠胫骨前肌,新鲜组织经液氮直接速冻、包埋剂联合液氮速冻、异戊烷联合液氮速冻前处理;固定组织经直接包埋、包埋剂联合液氮速冻进行前处理,制作冰冻切片后HE染色,并计算冰晶和肌纤维横截面积以评估不同前处理方式的切片效果。结果 新鲜组织经液氮直接速冻和异戊烷联合液氮速冻处理后均可见肌纤维束形态消失,大量的冰晶空泡;包埋剂联合液氮漂浮速冻,可见肌纤维束完整致密、无冰晶,为适合新鲜组织的前处理方法。固定组织包埋剂联合液氮速冻处理后肌纤维束完整、无冰晶。结论 新鲜和固定组织经包埋剂联合液氮速冻处理后肌纤维束完整、无冰晶,便于免疫组化、免疫荧光等实验的进一步进行,有利于准确快速地诊断骨骼肌疾病及探索骨骼肌疾病的发病机制。

3436例卵巢肿瘤术中冰冻病理检查结果分析

目的:探讨卵巢肿瘤术中冰冻病理检查的准确性。方法:回顾分析2011年1月至2023年3月在南京大学医学院附属鼓楼医院妇科接受手术治疗,术中行冰冻病理检查,且常规病理检查诊断为卵巢四大肿瘤(包括上皮性肿瘤、生殖细胞肿瘤、性索间质肿瘤、转移性肿瘤)的患者的临床病理资料。评估术中冰冻病理检查诊断卵巢原发肿瘤良恶性的准确性,计算良性、交界性、恶性卵巢肿瘤术中冰冻病理检查的敏感性、特异性、阳性预测值、阴性预测值;评估术中冰冻病理检查鉴别卵巢原发恶性肿瘤组织学分型的准确性;评估术中冰冻病理检查对卵巢转移性肿瘤定性为转移的准确性。结果:(1)术中冰冻病理检查诊断卵巢原发肿瘤良恶性的总体准确率为93.58%,其中交界性黏液性肿瘤、黏液性癌、未成熟畸胎瘤、颗粒细胞瘤的诊断准确率分别为70.16%、52.94%、46.15%、77.14%;卵巢良性、交界性、恶性肿瘤术中冰冻病理检查总体敏感性分别为99.40%、80.95%、92.99%;总体特异性分别为92.80%、98.38%、99.49%。(2)术中冰冻病理检查鉴别卵巢原发恶性肿瘤组织学分型的总体准确率为94.39%,其中无性细胞瘤、卵黄囊瘤的准确率较低,分别为61.11%、58.33%。(3)术中冰冻病理检查对卵巢转移性肿瘤定性为转移的准确率为53.78%,其中阑尾来源的准确率极低,为22.22%。结论:术中冰冻病理检查对卵巢肿瘤诊断的总体准确性高,但在交界性黏液性肿瘤、黏液性癌、未成熟畸胎瘤、颗粒细胞瘤的良恶性判断,无性细胞瘤和卵黄囊瘤的组织学分型及转移性肿瘤定性转移方面准确性差。

雏鸡脂肪肝冰冻切片制作过程中苏丹Ⅲ染色条件的探索

为探讨在雏鸡脂肪肝冰冻切片制作过程中苏丹Ⅲ染色的最佳条件,取7日龄雏鸡的肝脏组织,用冰冻切片机制作成切片,然后设置不同条件,用苏丹Ⅲ染色液对切片进行染色,观察染色效果,进行对比.结果表明:用苏丹Ⅲ染料染色9 min明显好于5 min和30 min,70%乙醇溶液冲洗5次明显好于2次和9次,蓝化3 min比未蓝化效果更佳.将肝组织冰冻切片标本用苏丹Ⅲ浸染9 min、70%乙醇溶液冲洗5次、苏木素浸染1 min、在自来水中蓝化3 min,肝组织的脂肪部位被明显染成橘红色,观察效果最好.

细胞学涂片在肺结节术中的快速病理诊断价值

目的探讨细胞学涂片在肺结节术中的快速病理诊断价值。方法对胸腔镜手术术中送检的40例肺结节标本进行细胞学涂片,迪夫快速染色,光镜下观察,即时报告结果;与术中冷冻切片和术后石蜡切片结果进行对照。以术后石蜡切片诊断结果作为金标准,细胞学涂片和冷冻切片诊断结果分为确诊、误诊和延迟诊断,计算诊断准确度。结果在40例肺结节标本中,石蜡切片诊断腺癌28例,鳞癌2例,肺错构瘤1例,硬化性肺细胞瘤1例,肉芽肿病变3例,机化性病变或炎性病变5例;细胞学涂片确诊38例,准确率95.0%,1例误诊,1例延迟诊断;冷冻切片确诊39例,准确率97.5%,1例延迟诊断;细胞学涂片与冷冻切片检查对术中肺结节的诊断准确度差异无统计学意义(χ^(2)=0.000,P=1.000)。结论细胞学涂片检查在肺结节的术中快速病理诊断中有较高的准确率,具有临床实用价值。